Window-frame pulley



Patented June 22, 1926i.

UNITED STATES CLAUDE EQBOWERS, OF LOS ANGELES, CALIFORNIA.

WINDOW-FRAME PULLEY.

Application led July 16, 1925. Serial No. 44,056.

This invention relates more specifically to a die stamped metal pulleyblock construe tion for placement in window frames.

An object of the inventionl is to provide a simple die stamped metal`sash cord pulley block that may be securely mounted in a window framewithout the necessity of employing nails, screws or other extraneousfastening devices.

Briefly, vthe invention consists of a pair of complemental die-formedmembers adapted when secured together to form a pulley housing, pulleypivot pins serving to rigidly secure the members together. Each memberwhich Jforms the housing of the block is provid-ed on one end with asemi-circular flange, whereby the circular flange jointly formed whenthe members are secured together1 covers or closes the bore beyond thewalls of said housing. Means are also provided for preventing a movementof the housing after an initial placement and consists in the preferredform of tapered oppositely disposed fins formed on the. outer surface ofthe housing members adapted to be forced into the window framesurrounding the bore for holding the block in position prior to forcingthe securing device into the frame. yI he anchoring or block securingdevice consists of a pivoted member in the form of a latch having asharp prong adapted to be forced into the hidden face of the wood casingto prevent tilting or other displacement of the block.

In the drawings wherein one embodiment is shown by way of example.

Fig. l discloses in side elevation a pulley block secured'in position ina window casing.

Fig. 2 is a top plan view of the device in position in the casing. n

Fig. 3 is a front elevation of the device 1n position.

Fig. 4 is a view taken approximately on the line 4-4 of Fig. 3 showingin elevation the inner side of one of the members constituting thehousing, with the pulleys in position. p

Fig. 5 is a rear elevation of the assembled device.

Fig. 6 is an enlarged cross section through the structure taken on theline 6-6 of Fig. 2.

The pulley block comprises a housing consisting of two complemental dieformed sheet metal members l0, each of which has a vertical side wallprovided with horizontally disposed top and bottom flange 12. Thesemembers are assembled in opposed relation with the edges of the flangesl2 abutting, and this relation is maintained by means of non-rotatablepivot pins 13 and .14 for the pulleys 1.5, the ends of the pins beingshouldered at 16 (Fig. 6) to properly space the walls l() and permitfree operation of the pulleys. The forward or outer end of each housingis provided with a semicircular flange 18 the upper portions of whichare braced by means of inclined integral fins 20 extending upwardly fromthe edges of the flanges 12. This construction of each Vof the membersl0 permits the same to be stamped readily from sheet metal therebymaterially reducing the cost, while the pulleys may be easily andcheaply machined from a metal rod. As shown in Fig. l, the pins carryingthe pulleys are located in and adjacent the bottom of the housing topermit of a fre-e passage of the sash cord over the pulleys when theblock is installed.

When the parts are assembled as-shown, the two semi-circular flanges 18cooperate to form a circular llange which, when the device is installedin a circular bore 24 formed in a window casing 25, completely coversthe outerv end of the bore 24, and also prevents a tilting action of thedevice when a downward pull is exerted on the same by the sash weight.

For the purpose of securely anchoring the device in the window frame oneend of the pivot pin 14 is extended sufficiently to receive a pivotedarm 26, its outer end being bent transversel away from the vertical wallof the housing in order to form a oonvenient means `for driving thesharpened prong 30 formed on the arm into the window casing below theopening 24 as shown in Fig. l.

In installing the device, a single circular bore 24 is drilled in thewindow casing 25, this operation being quite simple, andthe diameter ofthe bore slightly greater than the vertical diagonal of the housing l0.The device is then inserted in the bore in a vertical position anddriven inward until the ilanges 18 bear upon the outer face of thecasing, the ns 20 being thus forced into the wood at the edges oi' thehole, whereby movement of the device in the bore will be prevented priorto driving the securing prong in place. The latch 26 is drivendownwardly by a blow of a hammer from the position shown in dotted linein Fig. l to force 'the prong 30 into the wood below the bore 24 asshown, whereby rocking of, or displacement of the device in the borewill be prevented. The structure is then ready to receive the sash cord3l one -end of which is secured to a window sash and the other to a sashweight of usual form.

As the device is die formed from sheet metal it may be quickly `andcheaply manufactured. Further as it vcarries its own securing means theexpense oil providing nails, screws or like independent securing meansis obviated, and moreover as only 'a single circular bore in the 'windowframe is required further economies are effected in its installation.

lWhat I claim is:

l. A pulley block comprising a Vpair of metallic members adapted whenplaced together to form an opening extending therethrough, combinedrivet and pulley pins eX- tending transversely through said members torigidly secure the same together, ametal pulley journalled on 'each pinwithin the opening, and means pivotal'l'y mounted on 'one oi saidpulley-pins .for securing the block to a support.

2. A `pulley block construction compris- 'ing a die formed metalAhousing having an opening extending therethrough, one end of saidhousing provided with Van outwardly l'extending flange, said housinghaving means formed thereon for preventing a displacement of saidhousing when mounted in a bore of a window frame, a pulley pin mountedin said housing across said opening, a sash cord pulley mounted on saidpin, and a block securing prong pivotally mounted on said pulley pin.

3.1i pulley block construction comprising a die formed metal casinghaving an opening extending therethrough, a pulley pin transverselymounted in said casing, a sash cord pulley mounted on said pulley pinfor rotative movement in said opening, said pulley mounted in the lowerportion of said opening, whereby to provide space thereabove for thepassage of a sash cord therethrough7 and a prong pivotally mounted onone end of said pulley pin 'adapted to be driven into the wood supportin which the pulley block is mounted for securing the same in linedengagement therewith.

e. A pulley block construction comprising die lormed complement-almembers adapted when secured together to form an opening extending fromone end to the other, a pin extending across said opening adapted tosecure the members in Vfixed relation to each other, a sash cord pulleymounted on said pin, and a securing prong pivotally mounted on one ofthe ends of said lpin for securing the block in rig1d engagement withits support.

CLAUDE E. BWERS.

